@ 80lb ft distorting a motor.. Strip threads/snap a bolt? Sure "distorting a motor" not a chance.
don't be scared of pro comp/ebay head studs
I am honestly surprised though, anyone have a rough idea in torque vs the TTY bolts? I mean the difference between boring/honing a block without a deck plate vs with one. There is a difference so there is some distortion, I just wondered if there was any more torquing to 80.
Its a flimsy block, not sure if the LS cyl/decks are thicker but I now think about this stuff when building engines.
PS - heads bolts at 70lbs on this one.
I'll admit when I'm wrong. I still think that is just ludicrous for that to happen.. I mean no other factors besides over tightening? Torque pattern out of whack etc.. I just don't see it.
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I'm right there with you brother, but it happens. I'd definitely vote for incorrect pattern before much else. I know those Gen VI's were a little weak in those areas, just wasn't sure how an LSx paired up (especially aluminum) when you torque above spec (although I also didn't know the ARP's called for 80lbs either).
The LS is a different design. The rat has the threads right at the deck surface.
The LS1 obviously has the threads down at the bottom of the bore.
The later blocks are higher up. Would be interesting to see a cutaway.
The LS1 obviously has the threads down at the bottom of the bore.
The later blocks are higher up. Would be interesting to see a cutaway.
Agreed and that's probably a good thing. Might get some distortion down the bottom though. But if ARP recommends 80 lbs maybe they know something we don't.
Also, its possible that head bolts "twist" the surrounding metal as they are being torqued vs. a stud which is only being pulled in one direction.
Also, its possible that head bolts "twist" the surrounding metal as they are being torqued vs. a stud which is only being pulled in one direction.
I guess these must be the same as Alper/ ProComp?
Chevy LS 2002 2006 12 Point Head Stud Kit 2 Bolt Head Stud Kit | eBay
Chevy LS 2002 2006 12 Point Head Stud Kit 2 Bolt Head Stud Kit | eBay
12 Second Club
Joined: Feb 2006
Posts: 876
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From: Catlettsburg, Ky
If you think for one second you're not distorting the bore of a block by torquing the the heads to even 65ft lbs. You're either crazy, or never measured a cylinder with anything but a set of calipers.
If cylinder distortion is none existent then why does every. Single. Engine. Builder. Use a torque plate while honing?
Hmmm......
If cylinder distortion is none existent then why does every. Single. Engine. Builder. Use a torque plate while honing?
Hmmm......
I know it is kind of a dead post BUT..... You wouldn't happen to know if these are the right ones for an 05 Lq9 would ya? http://www.ebay.com/itm/LS1-Cylinder-Head-Stud-Kit-4-8L-5-7L-6-0l-l92-Extreme-Studs-04-l92-Ls3-/141515495215?pt=Motors_Car_Truck_Parts_Accessories&hash=item20f2fb172f&vxp=mtr
Thanks guys!
Thanks guys!
